St. Ephrem (350): “We know from the Gospel that there are various places of torment.  For it has been revealed to us that there is exterior darkness (Mt. 8:12), and so it follows that there is also interior darkness (Mk. 5).  The fire of Gehenna is another place, the abode of weeping and gnashing of teeth (Mt. 25:30).  Another place speaks of the worm that dieth not (Mk. 9:43).  We read in another place of the pool of fire (Apoc. 19:20), and again of tarturus, of unquenchable fire (Mk. 9:42, 44)… The depths of the earth is another place.  The hell where sinners are tormented, and the depths of hell, a more fearful place.  The wretched souls of the damned are distributed throughout these places of punishment, each one according to the nature of his sins.”